CFR > Title 36 - Parks, Forests, and Public Property > CHAPTER I—NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR > PART 4—VEHICLES AND TRAFFIC SAFETY > 4.30—Bicycles.

4.30—Bicycles.

(a) The use of a bicycle is prohibited except on park roads, in parking areas and on routes designated for bicycle use; provided, however, the superintendent may close any park road or parking area to bicycle use pursuant to the criteria and procedures of §§ 1.5 and 1.7 of this chapter. Routes may only be designated for bicycle use based on a written determination that such use is consistent with the protection of a park area's natural, scenic and aesthetic values, safety considerations and management objectives and will not disturb wildlife or park resources.
(b) Except for routes designated in developed areas and special use zones, routes designated for bicycle use shall be promulgated as special regulations.
(c) A person operating a bicycle is subject to all sections of this part that apply to an operator of a motor vehicle, except §§ 4.4, 4.10, 4.11 and 4.14.
(d) The following are prohibited:
(1) Possessing a bicycle in a wilderness area established by Federal statute.
(2) Operating a bicycle during periods of low visibility, or while traveling through a tunnel, or between sunset and sunrise, without exhibiting on the operator or bicycle a white light or reflector that is visible from a distance of at least 500 feet to the front and with a red light or reflector visible from at least 200 feet to the rear.
(3) Operating a bicycle abreast of another bicycle except where authorized by the superintendent.
(4) Operating a bicycle while consuming an alcoholic beverage or carrying in hand an open container of an alcoholic beverage.